26 lines
1.3 KiB
C#
26 lines
1.3 KiB
C#
using System;
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using BrotliLib.Brotli;
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using BrotliLib.Brotli.Components;
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using BrotliLib.Brotli.Components.Header;
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using BrotliLib.Brotli.Encode;
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using BrotliLib.Brotli.Encode.Build;
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using BrotliLib.Brotli.Parameters;
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namespace BrotliImpl.Transformers{
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public class TransformTestDistanceParameters : BrotliTransformerCompressed{
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protected override (MetaBlock, BrotliGlobalState) Transform(MetaBlock.Compressed original, BrotliGlobalState state, BrotliCompressionParameters parameters){
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var builder = new CompressedMetaBlockBuilder(original, state);
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var tracker = new MetaBlockSizeTracker(state);
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for(byte postfixBitCount = 0; postfixBitCount <= DistanceParameters.MaxPostfixBitCount; postfixBitCount++){
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for(byte directCodeBits = 0; directCodeBits <= DistanceParameters.MaxDirectCodeBits; directCodeBits++){
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builder.DistanceParameters = new DistanceParameters(postfixBitCount, directCodeBits);
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tracker.Test(builder, parameters, debugText: "[PostfixBitCount = " + postfixBitCount + ", DirectCodeBits = " + directCodeBits + "]");
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}
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}
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return tracker.Smallest ?? throw new InvalidOperationException("Transformation did not generate any meta-blocks.");
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}
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}
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}
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